Aoj 560 取石子

简单的博弈DP

爆搜改成记忆化搜索会爆栈，改成递推就好了。稍微用位运算优化了一下。。不过还是很慢

#include <cstdio>
#include <cstring>
#include <algorithm>
  
#define Win 0
#define Lose 1
  
using namespace std;
  
int S[11],N,M;
char note[100001];
  
inline char dp() {
    int n,p,i,j;
    for(i = 0;i < S[0];i++) note[i] = note[i] = Lose;
    for(i = S[0];i <= N;i++) {
        note[i] = 0;
        for(j = 0;j < M && S[j] <= i && !note[i];j++) note[i] |= note[i - S[j]];
        note[i] ^= 1;
    }
    return note[N];
}
  
int main() {
    int c = 1;
    while(scanf("%d%d",&N,&M),M || N) {
        for(int i = 0;i < M;i++) scanf("%d",S + i);
        sort(S,S + M);
        char ret = dp();
        printf("Case %d:
",c++);
        if(ret == Win) printf("Yes
");
        else printf("No
");
    }
    return 0;
}